Michelangelo



March 8, 1932. M. PAPALIA 1,843,799

DEVICE FOR AUTOMATIC TELEGRAPHiC TRANSMISSION Filed April 8, 1929 Wmbywr" Patented Mar. 8, 1932 UNITED STATES MICHELANGELO PAPAIIMEQE.QBQMEJ'ITAIEY DEVICE FOR. AUTOMATIC 'rnnmwnmammsmssmn Application filedApril 8, 1929, Serial. N'O.: 3 ;53 9,?,a1id in'jltalf'lanuary"30, .1929.

My present invention has for its object to provide a very simple devicefor automatic transmission of Morse signals in all schools for wirelesstelegraphy in which the teach- 5 ing is done in their own premises (oralteaching), or by pamphlets, instructions and the like, sent to thepupils (school by correspondence).

One of the main features of my present ini vention consists in aresistant strip of insulating material, such as paraffin paper,celluloid or other known preparations adapted for the purpose, suitablyperforated and sliding by means of a known mechanism which will behereinafter described. The perforations or holes of the perforatedstrip, such as for instance a cinematographic film, correspond to thetelegraphic Morse alphabet and are characterized in that'they permit thesimultaneous transmission of a plurality of lessons or telegram and, ifdesired, are of different speeds. This is due to the arrangement, sizeand shape of perforations.

By way of example, which however is merely illustrative,not limitativeof invention, the latter will now be described in one of itsmodifications with reference to the annexed drawings in which Fig. 1 isa side view, partially in section, of a an automatic telegraphictransmitting device according to my present invention,

Fig. 2 is a top view in which the covers have been omitted in order toshow the inner arrangement,

Fig. 3 is an enlarged detail of the inserting member and movable levercontacts, and

Fig. 4 shows types of perforations of film or strip.

Fig. 5 is a perspective view of the cam controlling the operation of thecontact members, the cam being removed.

My improved automatic telegraphic transmitting device comprises asuitable casing 1 secured on a base 2 of wood or other material adaptedfor the purpose. In the interior of the casing, the larger sides ofwhich constitute the armatures and supports ofaxes, a motor 3, forinstance'a clockwork, is provided which transmits the movement by meansof gearings 4, 5, 6 and 7 to a boblat'd: from-each other, that-meansthat every hin orrroll '8' whiclhcarriesthe;strip 9. On *an -a 2fei's-10lever contacts "11: are mounted,

which -are movable oni-their axis and 1 insulever is inst'rlated' I 1 llhes'said contacts are kept in their proper place by springs 25.

' The said contacts --at their' I opposite --ends close .an electriccircuit onethe. respective controllable coIi-tacts 1'3. Aninserter 14ofin- 00 sulating material has suitable recesses 15 provided therein, onoffset arrangement to each other, so as to permit of including the oneor the other or all of the levers together in their operating positionson the contacts 13, the said inserter being operated by a button 16,whilst the velocity of the motor is operated by another button 17. V

The cover of the casing comprises a plate 18 provided with an apertureor window 19 in which bears a pressure roller 20 for the strip or'film.In the said aperture or window project the rolls 21 of the levers 11.'

Both the pressure roller 20 and the guiding roller 22 of the film on thefeeding roller 8 are provided with proper springs 23 to in- 1 sure theiradherence on these parts.

An arm 24 is provided for stopping the op er ation of the motor.

Operation of device purpose may be inserted, which are operated for thewhole time of passage of electric'current.

The said time, which is that of the closure of circuits, is given by thesize and distance of the perforations provided in the strip or film.

It is to be understoodthat all of the parts forming the above describedautomatic telegraphic transmitting device are susceptible ofmodifications such as deemed necessary or useful according tocircumstances without departing from the scope of the invention ascircumscribed in the claims.

Having now particularly described and ascertained the nature of my saidinvention and the Way in which the same is to be performed, What I claimand desire to protect by Letters Patent is:

1. In a device of the character described; a plurality of independentlypivoted contact members engageable with a moving film, and a rotatablecontrol element for the V contact members adapted to move the latterindividually or collectively to inoperative position or permit thecontact members to operate individually or simultaneously.

2. A device as claimed in claim 1,. char-- acterized by the provision ofan electric drive motor for a film, and means for regulating the speedof the motor.

In testimony whereof I have hereunto set my hand.

MIGHELANGELO PAPALIA.

